Home / 19,812.20-29,718.32-18,500

Finding the Fourth Proportional to 19,812.20, 29,718.32 and 18,500

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Solution

The fourth proportional to 19,812.20, 29,718.32 and 18,500 is: 27,750.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.20 : 29,718.32 = 18,500 : x
  2. Step 2: Convert to fraction form
    19,812.20/29,718.32 = 18,500/x
  3. Step 3: Cross multiply
    19,812.20x = 29,718.32 × 18,500
  4. Step 4: Simplify right side
    19,812.20x = 549,788,920
  5. Step 5: Solve for x
    x = 549,788,920/19,812.20
  6. Step 6: Final answer
    x = 27,750.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.